Bug 1022 - Add ability to lookup dependent Module's attribute.

Add 2 methods to DependencyResolver to allow modules look up values
of dependent bean attributes.

Change-Id: I2ebee82cc1260a84a16f5e69b32c9234bf576e87
Signed-off-by: Tomas Olvecky <tolvecky@cisco.com>
(cherry picked from commit 2b78a2bcd978808b98c85a2c89160bca4674cffa)